File:Bell X-1 in flight.jpg
Original file (1,821 × 1,462 pixels, file size: 116 KB, MIME type: image/jpeg)
Captions
Public domainPublic domainfalsefalse |
This image or file is a work of a U.S. Air Force Airman or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image or file is in the public domain in the United States.
العربية ∙ беларуская (тарашкевіца) ∙ català ∙ čeština ∙ Deutsch ∙ English ∙ español ∙ eesti ∙ فارسی ∙ suomi ∙ français ∙ italiano ∙ 日本語 ∙ 한국어 ∙ македонски ∙ മലയാളം ∙ မြန်မာဘာသာ ∙ norsk bokmål ∙ Plattdüütsch ∙ Nederlands ∙ polski ∙ português ∙ português do Brasil ∙ русский ∙ sicilianu ∙ slovenčina ∙ slovenščina ∙ српски / srpski ∙ svenska ∙ Türkçe ∙ українська ∙ Tiếng Việt ∙ 中文(简体) ∙ 中文(繁體) ∙ +/− |
Bell X-1 in flight.
Source: http://afftc.edwards.af.mil/history/docs_html/aircraft/x-1_test_program.html archive copy at the Wayback Machine (photo link in first paragraph). Relevant description:
- During World War II, fighter pilots encountered a new and terrifying phenomenon. Rolling over into steep dives, they accelerated to speeds of 500 mph and into the unknown region of transonic flight (0.7-1.3 Mach) where the effects of compressibility--loss of control and structurally devastating aerodynamic loads--began to take over with often deadly consequences. By war's end, new turbojet engines were under development and they promised even higher speeds--speeds passing through the transonic and even, perhaps, into the supersonic region. So little was known about transonic aerodynamics, however, that many aerodynamicists theorized that drag would reach infinity as an airplane approached the speed of sound. The possible existence of a "sound barrier" was only one of a host of unknowns constituting a very real barrier to flight progress. Aircraft designers could not proceed without valid data and the wind tunnels of the day, which "choked" as the airflow around models reached transonic velocities, provided few answers. Thus an experimental research airplane--the rocket-powered and bullet-shaped Bell X-1 (photo)--was designed and built to acquire the necessary data...and to determine whether or not a piloted aircraft could actually penetrate the "sonic wall." The X-1 was the first in a series of "X"--or experimental--aircraft that were designed to answer fundamental questions, to probe the most challenging unknowns of flight and solve their mysteries. The program was also the Air Force's first foray into experimental flight research and the first collaborative effort in what would become an extraordinarily productive partnership between it and the National Advisory Committee for Aeronautics (NACA). The first NACA contingent arrived at Muroc Army Air Field (later Edwards) in September of 1946 and the NACA and its successor, NASA, have been conducting fundamental flight research there ever since.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 13:59, 16 December 2009 | 1,821 × 1,462 (116 KB) | Calliopejen1 (talk | contribs) | higher res | |
15:55, 16 April 2005 | 600 × 450 (57 KB) | Hautala (talk | contribs) | {{PD-USGov-Military-Air Force}} Bell X-1 in flight. Source: http://afftc.edwards.af.mil/history/docs_html/aircraft/x-1_test_program.html (photo link in first paragraph). Relevant description: :During World War II, fighter pilots encountered a new and te |
You cannot overwrite this file.
File usage on Commons
The following 3 pages use this file:
File usage on other wikis
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on ast.wikipedia.org
- Usage on az.wikipedia.org
- Usage on be-tarask.wikipedia.org
- Usage on be.wikipedia.org
- Usage on ca.wikipedia.org
- Usage on de.wikipedia.org
- Usage on el.wikipedia.org
- Usage on en.wikipedia.org
- Usage on es.wikipedia.org
- Usage on fa.wikipedia.org
- Usage on fi.wikipedia.org
- Usage on gl.wikipedia.org
- Usage on he.wikipedia.org
- Usage on hu.wikipedia.org
- Usage on ja.wikipedia.org
- Usage on no.wikipedia.org
- Usage on om.wikipedia.org
- Usage on pl.wikipedia.org
- Usage on pt.wikipedia.org
- Usage on ru.wikipedia.org
- Usage on ru.wikinews.org
- Usage on simple.wikipedia.org
- Usage on sl.wikipedia.org
- Usage on sv.wikipedia.org
- Usage on tr.wikipedia.org
- Usage on www.wikidata.org
- Usage on zh.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
_error | 0 |
---|